html,body{
  width:100%;
  height:100%;
  overflow:hidden;
}
#root{
  width:100%;
  height:100%;
  position: relative;
}
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
    "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
    sans-serif,"microsoft yahei";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.frosted{
  position: relative;
  z-index: 1;
}
.frosted:after{
  content:'';
  position: absolute;
  top:0;
  left:0;
  right:0;
  margin:0 -30px;
  background-color: rgba(235,238,241,0.8);
  z-index: -1;
  background-attachment: fixed;
  -webkit-filter: blur(20px);
  -moz-filter: blur(20px);
  -ms-filter: blur(20px);
  -o-filter: blur(20px);
  filter: blur(20px);
}
.ant-menu-horizontal > .ant-menu-item.ant-menu-item-active:hover,
.ant-menu-horizontal{
  border-bottom: 2px solid transparent;
}
.ant-menu-horizontal > .ant-menu-item.ant-menu-item-selected:hover{
  border-bottom: 2px solid #1890ff;
}